GIT: unionfs2-2.6.27.y: Unionfs: use igrab instead of atomic_inc inode refcnt

[Erez Zadok]

commit bd343ca5921ffa4a94b34b9293a6e99bdb77eb3e
Author: Erez_Zadok <ezk at cs.sunysb.edu>
Date:   Mon Jul 16 23:45:46 2007 -0400

    Unionfs: use igrab instead of atomic_inc inode refcnt
    
    In branch management code, use igrab() which is better than directly
    incrementing the lower inode reference count.
    
    Signed-off-by: Erez Zadok <ezk at cs.sunysb.edu>

diff --git a/fs/unionfs/super.c b/fs/unionfs/super.c
index c168b23..f4118df 100644
--- a/fs/unionfs/super.c
+++ b/fs/unionfs/super.c
@@ -740,7 +740,7 @@ out_no_change:
 	for (i=dbstart(sb->s_root); i<=dbend(sb->s_root); i++) {
 		struct dentry *lower_dentry =
 			unionfs_lower_dentry_idx(sb->s_root, i);
-		atomic_inc(&lower_dentry->d_inode->i_count);
+		igrab(lower_dentry->d_inode);
 		new_lower_inodes[i] = lower_dentry->d_inode;
 	}
 	/* 2. release reference on all older lower inodes */